Delivering Trace-Metal Precision with the Automatic Atomic Absorption Spectrometer Introduction Analysis of trace metals—iron, copper, lead, chromium, and others—in fuels, lubricants, and environmental samples is critical for monitoring wear, contamination, and compliance with regulatory limits. The A

Streamlining Quality Control with the Automatic Oil Cleanliness Tester Introduction Beyond hydraulics, a wide range of industrial oils—from gear oils to transformer oils—require regular cleanliness monitoring to prevent wear, deposit formation, and dielectric breakdown. The Automatic Oil Cleanliness T

Verifying Cold-Weather Flow with the Pour Point and Cold Filter Point Tester IntroductionIn temperate and arctic environments, petroleum products and bio-fuels must remain pumpable and filterable at low temperatures. The Pour Point and Cold Filter Point Tester from Changsha Friend Experimental Analys

Safeguarding Jet Engine Performance with the Jet Fuel Thermal Oxidation Stability TesterIntroductionHigh-temperature sections of jet engines and fuel-system heat exchangers expose aviation fuels to oxidative stress that can form gums and insoluble deposits. The Jet Fuel Thermal Oxidation Stability T

Ensuring Hydraulic System Reliability with the Hydraulic Fluid Cleanliness TesterIntroductionContamination of hydraulic fluids by solid particles and entrained air is a leading cause of component wear, valve sticking, and unpredictable system behavior. The Hydraulic Fluid Cleanliness Tester from Cha